[Feature]: Refactor duplicated command/handler wiring

[samatstariongroup]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of the EcoreNetto
• I have searched open and closed issues to ensure it has not already been reported

Description

• Summary: Program.CreateCommandChain repeats four near-identical blocks that each create a command, set an action that opens a DI scope, resolves a generator + version checker, builds a handler, and adds the command. Adding a report means copying the block.
• Affected files: ECoreNetto.Tools/Program.cs:121-179
• Proposed solution: Extract a generic helper, e.g. AddReportCommand<TCommand, TGenerator>(root, host), that performs the scope/resolve/handler wiring once.
• Acceptance criteria:
  • The four commands are registered via a shared helper with no copy-pasted scope/resolve logic.
  • CLI behavior is unchanged (existing command tests pass).